qgis - How to create memory layer and populate fields?

Seems like a basic operation using PyQGIS but can't see what I am missing. I want to create a memory layer with the exact same features and attributes from a shapefile. I have looked several posts such as:

The following script creates a memory layer, gets the correct fields and correct number of features but it doesn't populate the fields with data:

input = "C:/Users/Me/Desktop//example.shp"
layer = QgsVectorLayer(example,"line","ogr")


temp = QgsVectorLayer("LineString?crs=epsg:4326", "result", "memory")
temp_data = temp.dataProvider()
temp.startEditing()

layer_fields = layer.dataProvider().fields().toList()
attr = layer.dataProvider().fields().toList()
temp_data.addAttributes(attr)
temp.updateFields()

feat = QgsFeature()

for elem in layer.getFeatures():
    feat.setGeometry(elem.geometry())
    feat.setAttributes(attr)
    temp.addFeatures([feat])
    temp.updateExtents()

temp.commitChanges()
QgsMapLayerRegistry.instance().addMapLayer(temp)

Answer

Hmm, you set attributes to a list of fields instead a list of values. Try this:

feat.setAttributes(elem.attributes())